Northfield is a town in Washington county, Vermont. It was formed in 1781 in Vt., and N.Y. in 1770 from Orange county. It has used the following other name(s): Leyden. The probate and court district for Northfield is Washington. For more information, contact the town at 51 S. Main, Northfield 05663. On the attached map, Northfield is shown as 16 in Washington county.